Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
anh quang » anh xquang, anh quan, nhanh quang
quang cua » quan cua, quang tuan, quang huy
quang cao » nang cao, quang nam
tuan cau » toan cau, quan cau, tuan cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - anh quang cua ((nhung cong) OR (thong cong)) van ((tuan cau) or (quang cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - anh quang cua ((nhung cong) OR (thong cong)) van ((tuan cau) OR (quang cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - anh quang cua ((nhung cong) OR (thong cong)) van ((tuan cau) or (quang cao))".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - anh quang cua ((nhung cong) OR (thong cong)) van ((tuan cau) or (quang cao))*.